WO2015060199A1 - Dispositif d'accumulation thermique chimique - Google Patents

Dispositif d'accumulation thermique chimique Download PDF

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Publication number
WO2015060199A1
WO2015060199A1 PCT/JP2014/077600 JP2014077600W WO2015060199A1 WO 2015060199 A1 WO2015060199 A1 WO 2015060199A1 JP 2014077600 W JP2014077600 W JP 2014077600W WO 2015060199 A1 WO2015060199 A1 WO 2015060199A1
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WO
WIPO (PCT)
Prior art keywords
heat storage
reactor
storage device
storage material
exhaust pipe
Prior art date
Application number
PCT/JP2014/077600
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English (en)
Japanese (ja)
Inventor
聡 針生
貴文 山▲崎▼
野口　幸宏
浩康 河内
鈴木　秀明
Original Assignee
株式会社豊田自動織機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013221342A external-priority patent/JP2015081758A/ja
Priority claimed from JP2013221269A external-priority patent/JP6079557B2/ja
Application filed by 株式会社豊田自動織機 filed Critical 株式会社豊田自動織機
Priority to US15/028,602 priority Critical patent/US20160298520A1/en
Priority to EP14856192.1A priority patent/EP3062052A4/fr
Publication of WO2015060199A1 publication Critical patent/WO2015060199A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/003—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using thermochemical reactions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/10—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/18—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an adsorber or absorber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a chemical heat storage device used for heating a heating object provided in an exhaust system of an engine.
  • a chemical heat storage device described in Patent Document 1 As a conventional chemical heat storage device, for example, a chemical heat storage device described in Patent Document 1 is known.
  • a reactor in which a heat storage material is stored is arranged on the outer periphery of a catalyst (heating target), and the catalyst is heated using reaction heat due to a chemical reaction of the heat storage material.
  • the temperature of the catalyst is less than the activation temperature, for example, at the start of the engine
  • the heat storage material and the reaction medium are chemically reacted and the catalyst is heated by the reaction heat ( Exothermic reaction).
  • the chemical heat storage device transfers the heat of the exhaust gas to the heat storage material, and the reaction medium is separated from the heat storage material by the heat (regeneration reaction).
  • the thermal conductivity of the heat storage material in the reactor is low. For this reason, during the exothermic reaction, the reaction heat generated in the heat storage material is not easily transmitted to the catalyst, and it takes time to heat the catalyst to the activation temperature. During the regeneration reaction, it is difficult for heat from the exhaust gas to be transmitted to the heat storage material, and it takes time for the reaction medium to be separated from the heat storage material.
  • an object of the present invention is to provide a chemical heat storage device capable of improving the thermal conductivity in the reactor.
  • a chemical heat storage device is a chemical heat storage device that heats a heating target provided inside an exhaust pipe connected to an engine, and is disposed around the exhaust pipe and chemically reacts with a reaction medium.
  • a reactor including a heat storage material for generating heat and a high thermal conductivity member having a higher thermal conductivity than the heat storage material, a reservoir for storing a reaction medium, and the reactor and the reservoir are connected to each other. And a connecting pipe for moving the reaction medium between the high thermal conductivity member and the inner peripheral surface of the reactor that contacts the exhaust pipe from the outer peripheral surface of the reactor.
  • reaction heat when the temperature of the exhaust gas from the engine is low, the reaction medium is supplied from the storage device to the reactor, and the heat storage material and the reaction medium chemically react to generate heat (reaction heat) from the heat storage material. Is generated (exothermic reaction), the reaction heat is transmitted to the heating target, and the heating target is heated.
  • the temperature of the exhaust gas from the engine increases, the heat of the exhaust gas is transmitted to the heat storage material, the heat storage material and the reaction medium are separated (regeneration reaction), and the reaction medium is recovered in the reservoir.
  • the high heat conductive member extends from the outer peripheral surface side of the reactor to the inner peripheral surface side of the reactor that contacts the exhaust pipe, the heat generated in the heat storage material or the heat of the exhaust gas passes through the high heat conductive member and passes through the exhaust pipe. It is transmitted along the radial direction. Thereby, the thermal conductivity in the reactor is improved. Accordingly, during the exothermic reaction, the reaction heat generated in the heat storage material is easily transmitted to the heating target, so that the heating target can be efficiently heated. Further, during the regeneration reaction, the heat of the exhaust gas is easily transmitted to the entire heat storage material, so that the reaction medium can be efficiently recovered from the reactor to the reservoir.
  • the heat storage material and the high heat conduction member are disposed so as to contact the exhaust pipe, and the high heat conduction member may be interposed between the heat storage materials.
  • each heat storage material is formed in an annular shape and arranged along the axial direction of the exhaust pipe, and the high heat conductive member may be formed in an annular shape.
  • each heat storage material is formed in a curved cross section so as to extend in the axial direction of the exhaust pipe, and is arranged along the circumferential direction of the exhaust pipe. It may extend in the axial direction.
  • At least one of the upstream end and the downstream end in the axial direction of the exhaust pipe in the reactor is provided with an annular space that is connected to the connecting pipe and guides the reaction medium. May be.
  • a passage through which a reaction medium flows may be formed in the high heat conductive member.
  • the reaction medium is likely to enter the entire heat storage material by flowing through the high heat conducting member through the passage. Thereby, the heat storage material and the reaction medium can be efficiently chemically reacted in the reactor.
  • the high thermal conductivity member may be in the form of a sheet.
  • the reaction medium enters the heat storage material, so that even when the heat storage material expands, the high heat conduction member flexibly follows. Thereby, damage to a high heat conductive member etc. can be prevented.
  • the high thermal conductivity member is a sheet-like member, and each of the plurality of bent portions formed by being bent comes into contact with the outer peripheral surface side of the reactor to which the connection pipe is connected or the exhaust pipe. While arrange
  • the reactor disposed around the exhaust pipe stores a heat storage material containing a sheet-like high heat conductive member having a higher thermal conductivity than the heat storage material, and
  • the high heat conductive member forms a plurality of heat conductive surfaces extending from the outer peripheral surface side to the inner peripheral surface side.
  • the high thermal conductivity member may further form a flat surface substantially parallel to the outer peripheral surface of the exhaust pipe.
  • heat can be more efficiently transferred to the portion where the flat surface is formed, and heat from the portion where the flat surface is formed can be more efficiently absorbed. Can do.
  • the flat surface may be provided adjacent to a bent portion located on the inner peripheral surface side.
  • the heating object provided on the inner peripheral surface side of the reactor can be heated more efficiently, and from the exhaust gas passing through the inner peripheral surface side of the reactor. Heat can be absorbed more efficiently.
  • the bent portion of the high heat conductive member may be exposed from the heat storage material.
  • heat can be more efficiently transferred to the portion where the heat storage material is exposed, and heat from the portion where the heat storage material is exposed can be absorbed more efficiently. Can do.
  • the bent part located in the inner peripheral surface side among the bent parts of the high heat conductive member may be exposed from the heat storage material.
  • the object to be heated provided on the inner peripheral surface side of the reactor can be heated more efficiently and heat from the exhaust gas can be absorbed more efficiently. Can do.
  • a hole for circulating the reaction medium may be formed on the heat conducting surface of the high heat conducting member.
  • the reaction medium can freely flow through the high heat conduction member through the hole formed in the heat conduction surface, so that the reaction medium easily enters the entire heat storage material. Thereby, the thermal storage material and the reaction medium can be efficiently chemically reacted.
  • the high thermal conductivity member may be a graphite sheet.
  • the heat storage material may further contain carbon fiber.
  • the carbon fiber having a higher thermal conductivity than the heat storage material is further contained in addition to the high heat conductive member, so that heat can be more efficiently conducted.
  • the thermal conductivity in the reactor can be improved.
  • FIG. 1 is a schematic configuration diagram illustrating an exhaust gas purification system including a chemical heat storage device according to the first embodiment.
  • FIG. 2 is a perspective view showing a heat storage material and a high heat conductive sheet arranged around the exhaust pipe shown in FIG.
  • FIG. 3 is sectional drawing which shows the inside of a reactor about the chemical heat storage apparatus which concerns on 2nd Embodiment.
  • FIG. 4 is a side sectional view showing the inside of the reactor of the chemical heat storage device shown in FIG. 3 together with a connecting pipe.
  • FIG. 5 is a perspective view showing the high thermal conductive sheet shown in FIG.
  • FIG. 6 is a perspective view which shows the molded object stored in the internal space of a reactor about the chemical heat storage apparatus which concerns on 3rd Embodiment.
  • FIG. 7 is an enlarged perspective view showing a part of the molded body shown in FIG.
  • FIG. 8 is a perspective view showing a graphite sheet extracted from the compact shown in FIG.
  • FIG. 9 is a drawing showing a cross-section of the molded body according to the modification of the third embodiment as seen from the axial direction of the exhaust pipe.
  • FIG. 10 is a view showing a cross section of a molded body according to a modification of the third embodiment as seen from the axial direction of the exhaust pipe.
  • FIG. 11 is a view showing a cross section of the internal space of the reactor according to the modification of the third embodiment as seen from the axial direction of the exhaust pipe.
  • FIG. 12 is a schematic configuration diagram illustrating a modified example of the exhaust gas purification system including one embodiment of the chemical heat storage device.
  • FIG. 1 is a schematic configuration diagram illustrating an exhaust gas purification system 1 including a chemical heat storage device 10 according to the first embodiment.
  • An exhaust gas purification system 1 shown in FIG. 1 is provided in an exhaust system such as a diesel engine 2 (hereinafter simply referred to as “engine 2”) of a vehicle, and contains harmful substances contained in exhaust gas discharged from the engine 2 ( This system purifies environmental pollutants.
  • engine 2 a diesel engine 2
  • This system purifies environmental pollutants.
  • the exhaust gas purification system 1 includes an oxidation catalyst (DOC: Diesel Oxidation Catalyst) 4 and a diesel exhaust particulate removal filter (DPF: Diesel) provided in order from the upstream side to the downstream side in the exhaust passage 3 connected to the engine 2.
  • DOC Diesel Oxidation Catalyst
  • DPF diesel exhaust particulate removal filter
  • SCR SCR 5
  • SCR Selective Catalytic Reduction
  • ASC Ammonia Slip Catalyst
  • the DOC 4 is a catalyst that oxidizes and purifies HC and / or CO contained in the exhaust gas.
  • the DPF 5 is a filter that collects and removes PM contained in the exhaust gas.
  • the SCR 6 is a catalyst that supplies urea or NH 3 (ammonia) from the addition valve 6a to reduce and purify NOx contained in the exhaust gas.
  • the ASC 7 is a catalyst that oxidizes ammonia flowing downstream of the SCR 6.
  • the exhaust gas purification system 1 includes a chemical heat storage device 10 that heats the DOC 4.
  • the chemical heat storage device 10 is a heating unit that heats the DOC 4 (heating target) without requiring external energy such as electric power.
  • the chemical heat storage device 10 stores heat of exhaust gas (exhaust heat) and uses the heat stored when necessary.
  • the chemical heat storage device 10 includes a reactor 8 and a reservoir 11 that is connected to the reactor 8 via a connection pipe 9 and stores ammonia (NH 3 ) as a reaction medium.
  • the connecting pipe 9 is a part that connects the reactor 8 and the reservoir 11 and moves ammonia between the reactor 8 and the reservoir 11.
  • the connection pipe 9 is provided with an on-off valve 9a.
  • the reactor 8 is provided on the outer periphery of the exhaust pipe 13 which is a part of the exhaust passage 3.
  • the exhaust pipe 13 is, for example, a cylindrical pipe, and is made of, for example, stainless steel. Inside the exhaust pipe 13, a DOC 4 as a heating object is provided.
  • the reactor 8 has a heat storage material 21 and a high heat conductive sheet 22 as a high heat conductive member.
  • the heat storage material 21 and the high heat conductive sheet 22 are accommodated in an internal space of an annular case (not shown) of the reactor 8.
  • the heat storage material 21 and the high heat conductive sheet 22 are formed in an annular shape, and are disposed along the axial direction of the exhaust pipe 13 so as to contact the outer peripheral surface of the exhaust pipe 13.
  • the high heat conductive sheet 22 is interposed between the heat storage materials 21.
  • the heat storage material 21 generates heat by chemically reacting with ammonia.
  • the heat storage material 21 is a molded body formed by, for example, compression molding.
  • the heat storage material 21 is configured in an annular shape, for example, by combining a plurality of molded body parts formed in a curved cross section when viewed from the axial direction of the exhaust pipe 13.
  • a material having a composition of MaXz is used as the heat storage material 21 .
  • M is one or more cations selected from alkali metals, alkaline earth metals, aluminum, transition metals, and combinations of these metals.
  • X is one or more anions selected from fluoride ion, chloride ion, bromide ion, iodide ion, nitrate ion, thiocyanate ion, sulfate ion, molybdate ion and phosphate ion.
  • a is the number of cations per metal salt molecule.
  • x is the number of anions per metal salt molecule.
  • the heat storage material 21 can be formed of, for example, MgCl 2 .
  • the heat storage material 21 may be formed of CaCl 2 , NiCl 2 , MgI 2 , CaI 2, or MgBr 2 .
  • An example of the thermal conductivity of the heat storage material 21 is 0.1
  • the high heat conductive sheet 22 is formed in an annular shape as described above. At this time, the high thermal conductive sheet 22 may be configured in an annular shape by combining a plurality of sheet parts.
  • the high thermal conductive sheet 22 is a thin sheet (for example, about 40 to 100 ⁇ m).
  • the high thermal conductive sheet 22 is formed of a material having a higher thermal conductivity than the heat storage material 21. Since the high heat conductive sheet 22 is exposed to ammonia, it is preferably formed of a material that does not corrode by ammonia.
  • the high thermal conductive sheet 22 is formed of a graphite sheet.
  • the high heat conductive sheet 22 may be, for example, a sheet formed from stainless steel or a sheet formed from aluminum.
  • the activated carbon is enclosed in the reservoir 11.
  • the reservoir 11 stores ammonia by physically adsorbing the ammonia to the enclosed activated carbon.
  • the reservoir 11 may be filled with, for example, a mesoporous material (mesoporous silica having mesopores, mesoporous carbon, mesoporous alumina, etc.), zeolite, silica gel, or the like.
  • the heat generated from the heat storage material 21 is transmitted to the DOC 4 through the exhaust pipe 13, and the DOC 4 is heated to an activation temperature suitable for the purification of pollutants.
  • the heat storage material 21 and ammonia chemically react to generate heat (reaction heat) from the heat storage material 21.
  • DOC4 is heated by this reaction heat being transmitted to DOC4.
  • the high thermal conductivity sheet 22 having higher thermal conductivity than the thermal storage material 21 is interposed between the thermal storage materials 21, the heat generated in the thermal storage material 21 or the heat of the exhaust gas passes through the high thermal conductivity sheet 22. Thus, it is transmitted in the radial direction of the exhaust pipe 13. Thereby, the thermal conductivity in the radial direction in the reactor 8 is improved. Therefore, during the exothermic reaction, the reaction heat generated in the heat storage material 21 is easily transmitted to the DOC 4, so that the DOC 4 can be efficiently heated. Further, during the regeneration reaction, the heat of the exhaust gas is easily transmitted to the entire heat storage material 21, so that ammonia can be efficiently recovered from the reactor 8 to the storage 11 and the time required for the regeneration of ammonia can be shortened. .
  • the heat storage material 21 is a molded body formed by compression molding
  • the volume of the heat storage material 21 may expand due to a chemical reaction between the heat storage material 21 and ammonia.
  • the high heat conductive sheet 22 is in the form of a sheet and is disposed so as to contact the outer peripheral surface of the exhaust pipe 13.
  • the chemical heat storage device 10 according to the second embodiment will be described with reference to FIGS.
  • the chemical heat storage device 10 according to the second embodiment is the same as the chemical heat storage device 10 according to the first embodiment except for the heat storage material 21 and the high heat conductive sheet 22.
  • overlapping description with the first embodiment will be omitted, and differences will be mainly described.
  • the reactor 8 has an annular case 8a.
  • a plurality of heat storage materials 21 and a plurality of high heat conductors 24 as high heat conductive members are accommodated in the internal space of the case 8a.
  • the high thermal conductor 24 is made of stainless steel. Note that the high thermal conductor 24 is not limited to stainless steel, and may be composed of metal beads such as carbon black, carbon fiber, metal fiber, and aluminum beads, SiC beads, Si beads, carbon beads, or alumina beads.
  • Each heat storage material 21 is formed in a curved cross section (tile shape) so as to extend in the axial direction of the exhaust pipe 13, and is in contact with the outer peripheral surface of the exhaust pipe 13 along the circumferential direction of the exhaust pipe 13.
  • the high thermal conductor 24 is interposed between the heat storage materials 21.
  • the high thermal conductor 24 extends in the axial direction of the exhaust pipe 13.
  • the high thermal conductors 24 are arranged substantially radially when viewed from the axial direction of the exhaust pipe 13.
  • the high thermal conductor 24 is formed with a plurality of circular through holes 24a which are passages for circulating ammonia. These through holes 24a are formed in an aligned state and communicate with each other.
  • the shapes of the plurality of through holes 24a may be substantially the same or different. Further, the shape of the through hole 24a may be, for example, a polygonal shape.
  • the ammonia diffuses and easily passes through the heat storage material 21.
  • Each through hole 24a may be formed at random.
  • the high thermal conductor 24 may be a porous body such as a metal porous body, a metal nonwoven fabric or a metal fabric.
  • the upstream end in the axial direction of the exhaust pipe 13 in the reactor 8 is connected to the connection pipe 9.
  • An annular space 8b for guiding ammonia is formed inside the reactor 8 on the side to which the connecting pipe 9 is connected.
  • the heat generated in the heat storage material 21 or the heat of the exhaust gas is transmitted in the axial direction of the exhaust pipe 13 through the high heat conductor 24.
  • the thermal conductivity in the reactor 8 is reliably improved. Therefore, as in the first embodiment, the DOC 4 can be efficiently heated and the time required for the regeneration of ammonia can be shortened.
  • the volume of the heat storage material 21 may expand due to a chemical reaction between the heat storage material 21 and ammonia. Even when the heat storage material 21 expands in this way, the high heat conductor 24 is arranged so as to contact the outer peripheral surface of the exhaust pipe 13, so that the high heat conductor 24 flexibly follows the expansion of the heat storage material 21. To do. Thereby, damage to the high thermal conductor 24 can be prevented.
  • the reactor 8 has an annular space 8b for guiding ammonia inside the side to which the connecting pipe 9 is connected, so that the ammonia introduced from the connecting pipe 9 is contained in the reactor 8 Immediately wrap around the entire circumferential direction. Furthermore, since ammonia passes through the through holes 24a of the high thermal conductive sheet 22, the ammonia can easily enter the entire heat storage material 21. As described above, the heat storage material 21 and ammonia can be efficiently chemically reacted in the reactor 8.
  • the chemical heat storage device 10 according to the third embodiment will be described with reference to FIGS.
  • the chemical heat storage device 10 according to the third embodiment is the same as the chemical heat storage device 10 according to the first and second embodiments except for the reactor 8.
  • overlapping description with the first and second embodiments will be omitted, and the description will focus on the differences.
  • FIG. 6 is a perspective view showing a molded body stored in the internal space of the reactor 108.
  • a plurality of molded bodies 120 are stored in the internal space of the reactor 108.
  • the molded body 120 is formed in a curved cross section when viewed from the axial direction (exhaust direction) of the exhaust pipe 13.
  • These molded bodies 120 are stored in the internal space of the reactor 108 in a state of being formed into an annular shape by combining a plurality of molded bodies 120.
  • FIG. 7 is an enlarged perspective view showing a part (hatched portion) of the molded body shown in FIG.
  • the plurality of molded bodies 120 are molded body parts in which a heat storage material 121 including a graphite sheet 123 is compression-molded.
  • the graphite sheet 123 is a sheet-like high heat conductive member having a higher thermal conductivity than the heat storage material 121.
  • An example of the thickness of the graphite sheet 123 is 100 ⁇ m or less, and an example of the thermal conductivity is 300 to 1600 W / (m ⁇ K).
  • the graphite sheet 123 is formed by bending each of the plurality of bent portions 123b and 123c such that the outer peripheral surface 108a side of the reactor 108 to which the connecting pipe 9 is connected or the exhaust.
  • a plurality of heat conducting surfaces 123a are formed so as to be positioned on the inner peripheral surface 108b side of the reactor 108 in contact with the tube 13 and extend from the outer peripheral surface 108a side to the inner peripheral surface 108b side.
  • the heat conducting surface 123a is configured as a surface extending in a direction approximately along the radial direction and the axial direction of the exhaust pipe 13.
  • a plurality of heat conducting surfaces 123 a are formed along the circumferential direction of the exhaust pipe 13.
  • the graphite sheet 123 forms a flat surface 123d substantially parallel to the outer peripheral surface 13a of the exhaust pipe 13.
  • the flat surface 123d is provided adjacent to the bent portion 123b located on the inner peripheral surface 108b side of the reactor 108.
  • the bent portions 123 b and 123 c and the flat surface 123 d in the graphite sheet 123 are exposed from the heat storage material 121.
  • the bent portion 123c of the graphite sheet 123 contacts the outer peripheral surface 108a of the reactor 108
  • the bent portion 123b and the flat surface 123d of the graphite sheet 123 contact the inner peripheral surface 108b of the reactor 108.
  • a hole 123 e for circulating ammonia is formed in the heat conduction surface 123 a of the graphite sheet 123.
  • FIG. 8 although it becomes the structure by which the hole part 123e is located in a line along the circumferential direction of the exhaust pipe 13, it is not limited to this.
  • the method of bending the graphite sheet 123 and the content of the graphite sheet 123 with respect to the heat storage material 121 it is possible to obtain a molded body 120 having a thermal conductivity matched to the heating object.
  • the distance between the adjacent bent portions 123c of the graphite sheet 123 contained in the heat storage material 121 is adjusted, or the volume ratio of the graphite sheet 123 contained in the heat storage material 121 to the molded body 120 is set.
  • it can be set as the molded object 120 which has the heat conductivity matched with the heating target object.
  • the folded graphite sheet 123 in the molded body 120 is formed by compression molding in a state where the powder heat storage material 121 and the previously folded graphite sheet 123 are set in a mold. can do. Further, the graphite sheet 123 may be formed as follows. That is, the graphite sheet 123 is placed in a mold filled with a predetermined amount of the powdery heat storage material 121. Next, for example, the graphite sheet 123 is formed into the shape shown in FIG. 7 by pressing with a mold corresponding to the shape of the graphite sheet 123 shown in FIG. Then, a powdery heat storage material 121 is filled on the graphite sheet 123 formed in the shape shown in FIG.
  • the on-off valve 9a Is opened, and ammonia is supplied from the reservoir 11 to the reactor 108 through the connecting pipe 9.
  • the heat storage material 121 for example, MgCl 2
  • ammonia (NH 3 ) formed as the molded body 120 chemically react and chemisorb (coordinate bond), and heat is generated from the heat storage material 121. That is, the reaction from the left side to the right side in the following reaction formula occurs.
  • the heat storage material 121 including the graphite sheet 123 having higher thermal conductivity than the heat storage material 121 is stored in the reactor 108 arranged around the exhaust pipe 13.
  • the graphite sheet 123 forms a plurality of heat conducting surfaces 123a extending from the outer peripheral surface 108a side to the inner peripheral surface 108b side. For this reason, since the heat generated in the heat storage material 121 is transmitted to the DOC 4 through the graphite sheet 123, the thermal conductivity in the reactor 108 is improved. As a result, during the exothermic reaction, the reaction heat generated in the heat storage material 121 is easily transmitted to the DOC 4 that is the heating object, so that the DOC 4 can be efficiently heated.
  • the heat from the exhaust gas is applied to the heat storage material 121 (for example, MgCl 2 ) formed as the molded body 120, and MgCl 2 and NH 3 are converted. To separate. That is, the reaction from the right side to the left side in the above reaction formula occurs. Then, NH 3 separated from MgCl 2 is absorbed by the reservoir 11 through the connecting pipe 9.
  • the heat storage material 121 for example, MgCl 2
  • the heat conductivity in the reactor 108 is improved because the heat from the exhaust gas is transmitted through the graphite sheet 123 as in the exothermic reaction. As a result, at the time of the regeneration reaction, heat from the exhaust gas is easily transmitted to the heat storage material 121, so that ammonia can be efficiently separated from the heat storage material 121.
  • a flat surface 123d substantially parallel to the outer peripheral surface 13a of the exhaust pipe 13 is formed adjacent to the bent portion 123b positioned on the inner peripheral surface 108b side. For this reason, heat can be more efficiently transferred to the portion where the flat surface 123d is formed, that is, the portion where the DOC 4 is provided, and the heat from the exhaust gas can be absorbed more efficiently. .
  • the bent portions 123 b and 123 c of the graphite sheet 123 are exposed from the heat storage material 121. For this reason, heat can be more efficiently transmitted from the heat storage material 121 to the portion where the graphite sheet 123 is exposed, and heat from the portion where the heat storage material 121 is exposed can be absorbed more efficiently. be able to.
  • a hole 123e for circulating ammonia is formed in the heat conduction surface 123a of the graphite sheet 123. For this reason, ammonia can freely pass through the graphite sheet 123 through the hole 123e formed in the heat conduction surface 123a. As a result, ammonia easily enters the entire heat storage material 121, and the heat storage material 121 and ammonia can be efficiently chemically reacted.
  • the number of the heat storage material 21 and the high heat conductive sheet 22 arranged around the exhaust pipe 13 may be set as appropriate. Moreover, in said 2nd Embodiment, you may set the number of the thermal storage material 21 and the high heat conductor 24 arrange
  • annular high heat conductor may be used instead of the high heat conductive sheet 22.
  • a high thermal conductive sheet extending in the axial direction of the exhaust pipe 13 may be used.
  • the annular high heat conductive sheet 22 may be disposed, and the high heat conductor 24 may be disposed so as to extend in the axial direction of the exhaust pipe 13.
  • position high heat conductive members such as a high heat conductive sheet and a high heat conductor, diagonally with respect to a reactor.
  • the reactor 8 desirably has an annular space for guiding ammonia inside the side to which the connecting pipe 9 is connected.
  • the upstream end and the downstream end in the axial direction of the exhaust pipe 13 in the reactor 8 may be connected to the connecting pipe 9.
  • two annular spaces are provided. It is desirable.
  • an annular space portion may be provided in the central portion of the reactor 8 and connected to the connecting pipe 9 there.
  • a passage for circulating ammonia in the high thermal conductive sheet 22 is formed.
  • such a passage is formed in the high thermal conductive sheet 22. May be.
  • FIG. 9 is a cross-sectional view of the molded body 220 disposed in the internal space of the reactor 108 as viewed from the axial direction of the exhaust pipe 13.
  • the graphite sheet 123 viewed from the axial direction of the exhaust pipe 13 without providing a flat surface 123 d (see FIG. 7 or 8) on the inner peripheral surface 108 b side or the outer peripheral surface 108 a of the reactor 108.
  • You may comprise so that a cross section may become what is called a bellows shape.
  • the graphite sheet 123 has been described with an example in which the bent portion 123b and the flat surface 123d located on the inner peripheral surface 108b side of the reactor 108 are exposed from the heat storage material 121.
  • the invention is not limited to this.
  • the bent portion 123b and the flat surface 123d may be arranged so as not to be exposed on the inner peripheral surface 108b side of the heat storage material 121, or only the bent portion 123b is exposed, and the flat surface 123d is in the heat storage material 121. It may be arranged.
  • the bent portion 123c arranged on the outer peripheral surface 108a side of the reactor 108 may be arranged so as not to be exposed on the outer peripheral surface 108a side of the heat storage material 121.
  • FIG. 10 is a cross-sectional view of the molded body 320 disposed in the internal space of the reactor 8 as seen from the axial direction of the exhaust pipe 13.
  • the heat storage material 121 may contain a graphite sheet 123 having a higher thermal conductivity than the heat storage material 121 and a carbon fiber 125 having a higher thermal conductivity than the heat storage material 121. That is, a molded body 320 in which the heat storage material 121, the graphite sheet 123, and the carbon fiber 125 are compression-molded may be disposed in the internal space of the reactor 108.
  • the molded bodies 120, 220, and 320 have been described with reference to an example in which the molded bodies 120, 220, and 320 are formed in a tile shape (formed in a curved cross section when viewed from the axial direction of the exhaust pipe 13).
  • the present invention is not limited to this, and may be formed in, for example, a rectangular parallelepiped, a cube, or a hollow cylindrical shape.
  • FIG. 11 is a cross-sectional view of the internal space of the reactor 108 as viewed from the axial direction of the exhaust pipe 13.
  • a graphite sheet 123 bent in the shape shown in FIG. 11 is installed in a predetermined space 127 formed in the reactor 108, and then a powder heat storage material 121 is filled. Also good.
  • the effect similar to 3rd Embodiment can be acquired.
  • the bent portion 123c disposed on the outer peripheral surface 108a side is not exposed from the heat storage material 121 .
  • the bent portion 123c may be exposed from the heat storage material 121.
  • the shape of the graphite sheet 123 arranged on the heat storage material 121 can be various shapes as described above.
  • thermo storage material 121 A sheet-like member formed of stainless steel, aluminum, copper, or the like having a higher thermal conductivity than 121 may be used.
  • the sheet-like high heat conductive member contained in the heat storage material 121 is a material that is not corroded by the reaction medium.
  • the heat conducting surface 123 a is configured as a surface extending in a direction approximately along the radial direction and the axial direction of the exhaust pipe 13, and the exhaust pipe 13.
  • the heat conducting surface 123a is configured as a surface extending in a direction approximately along the radial direction and the circumferential direction of the exhaust pipe 13, and a plurality of the heat conducting surfaces 123a are formed along the axial direction of the exhaust pipe 13. It may be a configuration.
  • ammonia is generated as a reaction medium and MgCl 2 as the heat storage material 121 is chemically reacted to generate heat
  • the reaction medium ammonia (NH 3 ) is particularly used.
  • NH 3 ammonia
  • H 2 O may be used.
  • CaO or the like can be used as a heat storage material that chemically reacts with H 2 O.
  • a configuration combining the first and third embodiments, a configuration combining the second and third embodiments, or a configuration combining the first, second, and third embodiments may be employed.
  • the high thermal conductive sheet 22 and / or the high thermal conductor 24 may be interposed between a plurality of molded bodies 120 including the graphite sheet 123 as shown in FIG.
  • heat is generated by chemically reacting ammonia as a reaction medium and a heat storage material such as MgCl 2 , but the reaction medium is not particularly limited to ammonia (NH 3 ), for example, H 2 O may be used.
  • NH 3 ammonia
  • H 2 O may be used.
  • CaO or the like is used as a heat storage material that chemically reacts with H 2 O.
  • the said embodiment gave and demonstrated the example which uses DOC4 provided in the exhaust system of the engine 2 as a heating target object, this invention is not limited to this,
  • SCR6 is heated object.
  • the exhaust pipe 13 may be a heating object.
  • an exhaust gas purification system in which a heat exchanger 14 made of a member having high thermal conductivity such as a metal honeycomb structure is arranged in an exhaust pipe upstream of a catalyst such as DOC4. It is also applicable to 1A.
  • the heat exchanger 14 may be a heating target
  • the reactor 12 may be disposed on the outer peripheral portion of the heat exchanger 14, and the heat exchanger 14 may be heated from the outer peripheral side.
  • the example applied to the exhaust system of the diesel engine 2 has been described.
  • the present invention is not limited to this example, and is applied to the exhaust system of a gasoline engine. May be used as an object to be heated, and other than the internal combustion engine may be used as an object to be heated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un dispositif d'accumulation thermique chimique qui, selon un mode de réalisation, chauffe un sujet de chauffage ménagé dans l'intérieur d'un tuyau d'échappement relié à un moteur, et est équipé de : un réacteur qui est disposé autour du tuyau d'échappement et comprend un matériau d'accumulation thermique qui réagit chimiquement avec un milieu réactionnel et génère de la chaleur, et un membre à conductivité thermique élevée possédant une conductivité thermique plus élevée que le matériau d'accumulation thermique ; un récipient de stockage stockant le milieu réactionnel ; et un tuyau de raccordement reliant le réacteur et le récipient de stockage et permettant au milieu réactionnel de se déplacer entre le réacteur et le récipient de stockage. Le membre à conductivité thermique élevée s'étend du côté de la surface circonférentielle externe du réacteur au côté de la surface circonférentielle interne du réacteur en contact avec le tuyau d'échappement.
PCT/JP2014/077600 2013-10-24 2014-10-16 Dispositif d'accumulation thermique chimique WO2015060199A1 (fr)

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US15/028,602 US20160298520A1 (en) 2013-10-24 2014-10-16 Chemical heat storage device
EP14856192.1A EP3062052A4 (fr) 2013-10-24 2014-10-16 Dispositif d'accumulation thermique chimique

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JP2013221342A JP2015081758A (ja) 2013-10-24 2013-10-24 化学蓄熱装置
JP2013221269A JP6079557B2 (ja) 2013-10-24 2013-10-24 化学蓄熱装置
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WO2018066407A1 (fr) * 2016-10-06 2018-04-12 株式会社豊田自動織機 Dispositif de stockage de chaleur chimique
WO2018193837A1 (fr) * 2017-04-19 2018-10-25 株式会社豊田自動織機 Dispositif de stockage de chaleur chimique
DE112017006850B4 (de) 2017-01-17 2024-09-05 Ngk Insulators, Ltd. Wärmeerzeugungssystem, abgasreinigungsvorrichtung und verfahren zum regenerieren einer wabenstruktur

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FR3057021A1 (fr) * 2016-10-04 2018-04-06 Peugeot Citroen Automobiles Sa Dispositif de traitement des gaz d’echappement
DE102020105013A1 (de) 2020-02-26 2021-08-26 Bayerische Motoren Werke Aktiengesellschaft Abgasleitung für einen Kaltstart-Betrieb einer Brennkraftmaschine

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DE112017006850B4 (de) 2017-01-17 2024-09-05 Ngk Insulators, Ltd. Wärmeerzeugungssystem, abgasreinigungsvorrichtung und verfahren zum regenerieren einer wabenstruktur
WO2018193837A1 (fr) * 2017-04-19 2018-10-25 株式会社豊田自動織機 Dispositif de stockage de chaleur chimique

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